Ranitidine - Drug Details

Ranitidine (Zantac)

Classification

H2 Receptor Antagonist

Mechanism of Action

Indications

GERD, peptic ulcer disease

Dosage and Administration

150 mg twice daily or 300 mg once daily at bedtime

Forms

Tablet, syrup, injection

Side Effects

Headache, dizziness, constipation

Contraindications

Porphyria, severe renal impairment

Interactions

May alter the effects of drugs that require an acidic pH for absorption

Precautions

Use caution in elderly patients and those with renal impairment

Pharmacokinetics

Absorbed in the intestines, metabolized minimally, excreted in urine

Pharmacodynamics

Reduces stomach acid and relieves symptoms of GERD

Storage Requirements

Store at room temperature, away from moisture and light

Patient Counselling

Take at the same time each day, with or without food

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